All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=747878

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3ccb2d117e0c892feac05953b11bedd4389ad1f64ecd02eaddb480a9c1af8658


Bot(s) for this bug's original alert(s):

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973192559288836624

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Geoff Lang
  Commit : df412bd5a319c948a882c7d9b620696facd5ff51
  Date   : Thu Jul 20 18:29:29 2017
  Subject: Lazily create shader translators and implement glReleaseShaderCompiler

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:chrome:all_processes:reported_by_os:system_memory:private_dirty_size_avg/background/after_http_m_youtube_com_results_q_science
  Change       : 1.15% | 53305428.8889 -> 53919601.3333

Revision             Result                   N
chromium@488241      53305429 +- 809982       9      good
chromium@488294      53318172 +- 433751       6      good
chromium@488307      52978656 +- 1730108      9      good
chromium@488314      53216681 +- 1642566      9      good
chromium@488316      53374833 +- 575438       6      good
chromium@488317      53940764 +- 367500       6      bad       <--
chromium@488320      53891157 +- 888510       9      bad
chromium@488346      53919601 +- 534129       6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests memory.top_10_mobile

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973192559288836624


For feedback, file a bug with component Speed>Bisection